Casement-window



E. G. BAXTER.

CASEMENT WINDOW.

APPLICATION FILED SEPLMI. I9I9.

2 SHEETS-SHEET l.

1,332,593. Patenten... 2, 1920,

I-i.-G. BAxIEII.

CASENIENT' WINDOW.

APPLICATION FILED sEPT; 4. Ism.

1,332,593Q Pafented Mar. 2, 1920.

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EDMUND GEORGE BAXTER, 0F KENSINGTON, LONDON, ENGLAND.

CASEMENT-WINDOW.

Specification of Letters Patent.

Patented Mar. 2, 1920.

Application filed September 4, 1919. Serial No. 321,642.

To all whom t may concern Be it known that I, EDMUND GEORGE BAX- TER, of9 Vicarage Gardens, Campden Hill, Kensington, London, WV. 8, England,civil engineer, a subject of the King of Great Britain and Ireland, haveinvented certain new and useful Improvements in Casement- Windows, ofwhich the following is a specification.

This invention relates to easement windows and has for its object toprovide an improved form of window of this kind adapted to open ateither side alternatively and to be hinged at the other side. In otherwords the object of my invention is to provide a easement window whichis not restricted to being opened at one particular side and hinged atthe opposite side but which can be swung open at either one side or theother as may be desired according to, or in consequence of, the wind orotherI conditions prei/'ailing at that moment.

The invention consists essentially in the improved either way easementwindow, both sides, that is both Stiles, of the opening member of whichare provided with one or more hinges, one leaf of each hinge beingscrewed or otherwise fixed to the stile and the other leaf of the hingebeing loose, and in which the loose hinge leaves are detachably securedin engagement with locking devices let into the uprights of the fixedwindow frame, in such a manner that either stile of the window can bereleased at will to open the window on that side by releasing thelocking connection between the loose leaf on the corresponding stile andthe frame.

The preferred construction of my improved either-way easement window.will now be described with the aid of the accompanying drawings, inwhich Figure 1, is a fragmentary front View from the interior of theapartment of the lower part of the improved casement window; Fig. 2 is asectional view on the line II-II of Fig. 1. Figs. 3 and 4 illustratedetails of the said preferred construction; Figs. 5 and 6 are side viewsof the members of the movable hinge, and Figs. 7 and 8 are plan views`thereof.

yReferring to the drawings, part of a wooden stile 1 of the openingmember of the window is shown in Figs. 1 and 2 in the closed position inengagement with the corresponding wooden upright 2 of the fixed frame ofwhich the other upright is shown at 3 and the lower rail at 4 (Fig.- 1).

The outer side of the stile 1 is provided with a hinge of which one leaf5 is fixed by means of screws or other suitable means (not shown) to acountersunk portion of the said outer side while the other leaf 6 of thehinge is loose and can rotate around a pivot pin 7 connecting themembers of the hinge. The fixed hinge 5 is formed as shown in Figs. 5and 8, having integral therewith a member 5', extending at right anglesthereto, and at the outside of the angle between these two members aplurality of cylindrical members 13 are formed, which are adapted toarticulate with similar members formed on the loose hinge 6, all of themembers being provided with a central opening so that when the membersare articulated together the openings are in alinement and adapted toreceive the pintle or pivot 7. The loose hinge is formed as shown inFigs. 6 and 7, having integral therewith a portion 6, at right anglesthereto, and a similar arrangement of cylindrical portions 13 integralwith the portions 6 and 6 at the outside of the angle formed betweenthese two portions. The portion 6 has also formed integral therewith andwith the cylindrical portions a block portion 14 on the face of theportion 6 which is adapted to lie contiguous to the member 5, when thehinge members are assembled, the block 14 thus serving to maintain themembers 5 and 6 spaced apart. For maintaining the members 5 and 6 inparallel relation, as shown in Fig. 2, even when the window sash isopen, I provide a at spring 8, which may be se cured to the stile 1 bymeans of the screws 9 and 10 which secure the member 5 to the stile, aspacing block 11 being secured in position between the spring 8 and theportion 5 of the fixed member of the hinge. The eXtreme free end of thespring 8 is tapered and is adapted to rest on the tapered outer side ofa pin or plug 12, formed on the uppermost cylindrical member 13 carriedby the loose member 6 of the spring. By reason of this construction thespring 8 resists any tendency of the loose member 6 to rotate on thepivot 7, and thereby maintains the portion 14 in contact with the faceof the member 5, even when the window is open, while the block 14prevents the members 5 and 6 from closing any nearer together than asshown in Fig. 2.

The upright 2 of the wooden frame of the window is cut away to form arecess opposite to each hinge on the stile 1 to enable the tion. Toretain the handle hinge leaves 5 and 6 to come into closed position inwhich they embrace between them a plate 16 preferably of metal securedin the recess 15 by means of screws 17 and 18, for example (Fig. 3).

From the interior of the apartment a hole 19 is bored in the upright 2of the frame 'extending to the vicinity of the recess 15 and plate 16therein and terminating in a hollow space 20, the hole 19 and space 2Oaccommodating a spindle 21 on the inner end of which is secured alocking tumbler 22 Xed to a square part of the spindle 21 by a lscrew23, the tumbler 22 having a projecting nose adapted to engage in arecess 24 milled or otherwise formed in the outer surface of the looseleaf 6 of the hinge on the stile 1. The outer end'of the spindle 21terminating within the apartment is supported in a bearing bushing 25`inwardly projecting from a plate 26 adapted to be secured upon thesurface of the upright 2 ofthe frame, the spindle 21 being held in itscorrect position within the bushing by means of a screw 27, for example,projecting through the wall of the bushing 25 into a circumferentialgroove formed in the spindle 21` which is conveniently provided at itsprojecting end with a squared portion adapted to receive a similarlyvshaped hole in a handle 28 adapted to rotate the spindle 21 and thus tooperate the locking member 22 mounted thereon, the handle being se curedin position on the spindle by a screw 35. In order to support thetumbler 22 in its locking position in engagement with the recess 24 inthe loose leaf 6 the' space 20 may advantageously be fitted with a steelplate 29 against which bears the rear portion of the locking tumbler 22in its locking posi- 28 in its locking position shown in Fig. 2 alocking pin 30 is provided which is passed through a hole 31 in thehandle and holes registering therewith in the plate 26 and upright 2 ofthe frame.

Two or more hinges formed as described above may be provided on eachstile of the opening member of the window when this is large enough torequire the support of more than one hinge. In this case the handles 2Sare each provided with a tail piece 32 and these tail pieces areconnected together by vertically arranged connecting bars 33, one oneach side of the window, the connection being made by screws 34, forexample, as shown in Figs. 1 and 2. In the arrangement illustrated theupper ends of the bars 33 are supposed to be connected to a secondhandle (not shown) on each side of the window.

In order to interlock the locking means on one side of the window withthe locking means on the other side of the same so that both sides ofthe window cannot be released at lthe same time, the lower ends of thecon` necting bars 33 rest upon normally horizontal arms 36, 37respectively of two bell crank levers pivoted on the lower rail 4 of thewindow frame in such a manner that the arms 36, 37 extend outwardly,that is, to the left and right respectively from the pivots of the bellcranks which are shown at 38 and 39, while between the downwardlydepend-V ing arms 40 and 41 respectively of the bellV cranks ahorizontalk bar 42 is arranged to slide'longitudinally being providedfor this,V

against the depending arm 40 of the bell.

crank on the left the effect being to force the horizontal `arm 36 ofthe said bell crank to tend to raise the lower end of the bar 33 on theleft and thus to prevent this side of the window from being released atthe same time as the right hand side, as'will readily beunderstood fromFig. 1 of the drawings.

In operation supposing that it is desired to open the right hand side ofthe window shown in Fig. 1, the locking pin 30 is first withdrawn fro-mthe handle 28 which is then moved into the open position shown on theright of Fig. lthus rotating the spindle 2l to bring the lockingltumbler 22 into the full line position shown in F ig.v 3 in which theloose leaf 6 of the hinge on the corresponding stile of the window isreleased. This stile can now be pushed outward to open the window whichswings in the usual manner upon the hinge pin 7 of the hinge on the lefthand side, the loose leaf 6 of which is retained locked to the upright 2of the window frame by the locking tumbler 22 en gaging in the recess 24formed in the back of the said loosevleaf 6. In order to open the lefthand side of the window the right hand side must first be closed andthev corresponding locking handle 28 be turned down into lockingposition thus lifting the right hand connecting bar 33 upward andpermitting the horizontal vinterlocking bar 42k to be moved tothe right,this movement being eected by turning the left hand handle 28 into openposition, whereupon the left hand side is released and can be pushedopen, the window now swingingl upon the hinge pin 7 on the right handside.

In order to prevent a handle 28 from being turned into closed positionwhile the corresponding side of the window is open thus releasing theinterlocking device and enabling the other side also to be opened, Iprovide an automatic safety catch such as that shown in Fig. 4consisting of a depend-Y ing arm 47 the end of which is formed with ahook 48, and a horizontal arm 49 engaged by a fiat spring 50 tending toturn the device on its pivot pin 51 into the position shown in Fig. 4 inwhich the hook 48 comes beneath the handle 28. The device comes intothis position only on the corresponding side of the window beingactually opened that is, after the handle 28 on that side has beenraised into the open position shown in the right of Fig. l, in whichposition therefore the said handle is retained until that side of thewindow is again closed whereupon a suitable pin or other projection 52secured upon or near the edge of the stile 1 pushes the horizontal arm49 to the right as seen in Fig. 4 against the pressure of the spring 50thus moving the hook 48 to the left away from the handle 28 and thuspermitting the latter to be turned down into locking position.

What I claim and desire to secure by Letters Patent is l. In a casementwindow, the combination with a hinge on each stile of the window sash,one leaf of each hinge being fixed to the stile and the other leafpivoted to said fixed leaf, and means for flexibly maintaining saidleaves in spaced parallel relation, of a two-part locking means carriedby the window frame and adapted to engage onel of said leavestherebetween for detachably securing the said leaf to the frame.

2. In a easement window, the combination with a hinge on each stile ofthe window sash, one leaf of each hinge being fixed to the stile and theother leaf pivoted to said fixed leaf, and means for flexiblymaintaining said leaves in spaced parallel relation, of a two-partlocking means carried by the window frame, one part of said lockingmeans being adapted to enter the space between said leaves and the otherpart being adapted to exert pressure on one of the leaves thereby toretain it in frictional engagement with said first part whereby theleaves are detachably secured to the frame.

3. In a casement window, the combination with a hinge on each stile ofthe window sash, one leaf of each hinge being fixed to the stile and theother leaf being loose, of a plate secured to each side of the windowframe in line with and edge-on toward the opening between the loose andfixed leaves of the hinge and adapted to be embraced between the saidleaves in the closed position of the window, a spindle journaled in thewindow frame in the vicinity of each plate, a recess on the outer faceof the loose leaf of each hinge, a locking tumbler fixed upon thespindle adapted to engage in said rey the other leaf being loose, of acorresponding number of locking devices for detachably securing theloose hinge leaves on both stiles to the frame, handles for operating`the said devices, a vertically arranged bar connecting the handles onone side of the window enabling all these handles to be operated byoneof them, a vertically arranged bar connecting the handles on the otherside of the window enabling all these handles to be operated by one ofthem, a bell crank lever having a normally horizontal arm engaging thelower end of one connecting bar and a normally vertical arm, anotherbell crank lever having a normally horizontal arm engaging the lower endof the other connecting bar and a normall vertical arm, both bell cranksbeing pivote on the frame between the two vertical bars, and a slidinghorizontal bar arranged between the ends of the vertical arms of the twobell cranks to prevent both of the sets of handles from being moved intoreleasing position at the same time.

5. In an either-way easement window, the combination with a hinge oneach stile of the window sash, one leaf of each hinge being fixed to thestile and the other leaf being loose, of a part on the window frameadapted to be engaged by the fixed and loose leaves of a hinge in theclosed position of the corresponding side of the window, and means fixedto the stile and adapted to flexibly engage the loose leaf to retain itin same position relative to the fixed leaf when the sash is in open andin closed position.

6. In an either-way casement window, the combination with a hinge oneach stile, one leaf of each hinge-being fixed to the stile and theother leaf being loose, of a locking part on the loose leaf, a lockingdevice carried by the window frame adapted to engage the said lockingpart on the loose leaf, a handle for operating the said locking device,and an automatic catch device on the window frame adapted to prevent thehandle from being turned into the locking position while thecorresponding side of the window is open.

In testimony whereof I have signed my name to this specification.

EDMUND GEORGE BAXTER.

